CN210166390U - Production process LEL on-line measuring system - Google Patents
Production process LEL on-line measuring system Download PDFInfo
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- CN210166390U CN210166390U CN201920621673.7U CN201920621673U CN210166390U CN 210166390 U CN210166390 U CN 210166390U CN 201920621673 U CN201920621673 U CN 201920621673U CN 210166390 U CN210166390 U CN 210166390U
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Abstract
The utility model provides a production process LEL on-line measuring system, include: sampling probe, washing device, anticorrosive pneumatic aspiration pump, constant temperature vortex dehumidifier, first filter, second filter and LEL analysis appearance, mark gas device acquire the sample gas through the sampling probe to washing, dehumidification, filtration etc. are carried out to it, and carry out the analysis to the sample gas, are convenient for protect the LEL analysis appearance.
Description
Technical Field
The utility model relates to a gaseous detection technology field, in particular to production process LEL on-line measuring system.
Background
The workshop waste gas refers to various pollutant-containing gases discharged into the air in the process of fuel combustion and production in the factory area of an enterprise. These exhaust gases are: carbon dioxide, carbon disulfide, hydrogen sulfide, fluoride, nitrogen oxide, chlorine, hydrogen chloride, carbon monoxide, sulphuric acid (fog) plumbous mercury, beryllium thing, smoke and dust and productive dust, wherein, may have combustible gas's existence, when combustible gas's concentration reaches a definite value, can explode, the very big destruction to the leading to the fact in workshop, consequently, adopt LEL analysis appearance to detect the combustible gas's in workshop concentration and just become the weight of the priority, but at the in-process that detects, because there are some materials such as acidity in the sample gas, use the in-process that LEL analysis appearance detected, can cause the damage of certain degree to it.
SUMMERY OF THE UTILITY MODEL
The utility model provides a production process LEL on-line measuring system for handle the appearance gas, improve the life of LEL analysis appearance.
The embodiment of the utility model provides a production process LEL on-line measuring system, include: the device comprises a sampling probe, a water washing device, an anticorrosive pneumatic air pump, a constant-temperature vortex dehumidifier, a first filter, a second filter, an LEL analyzer and a standard gas device;
the gas inlet of the sampling probe is in contact with the exhaust gas outlet, and the gas outlet of the sampling probe is connected with the gas inlet of the water washing device through a first switch ball valve;
an exhaust port of the water washing device is connected with a first air inlet of the anticorrosion pneumatic air pump;
an exhaust port of the anticorrosive pneumatic air pump is connected with a first air inlet of the constant-temperature vortex dehumidifier;
the air outlet of the constant-temperature vortex dehumidifier is connected with the air inlet of the first filter;
the first exhaust port of the first filter is connected with the air inlet of the second filter through the first air inlet and the exhaust port of the three-way switching valve;
the exhaust port of the air marking device is connected with the air inlet of the second filter through the second air inlet and the exhaust port of the three-way switching valve;
the gas vent of second filter with the air inlet of LEL analysis appearance is connected, the gas vent of LEL analysis appearance is discharged the sample gas through the discharge port through connecting tube.
Preferably, the LEL online detection system further includes: a first adjustable flow meter and a second adjustable flow meter,
the gas inlet of the first adjustable flow meter is connected with the second gas outlet of the first filter, and the gas outlet of the first adjustable flow meter discharges the sample gas through the discharge port through a connecting pipeline;
and the air inlet of the second adjustable flowmeter is connected with the air outlet of the second filter, and the air outlet of the second adjustable flowmeter is connected with the air inlet of the LEL analyzer.
Preferably, the LEL online detection system further includes: the device comprises a first compressed air inlet, a second compressed air inlet, a waste liquid collecting port, a liquid discharging port, a standard gas inlet and a discharging port;
the first compressed air inlet is connected with a second air inlet of the anticorrosion pneumatic air pump through a first air filtering and reducing valve;
the second compressed air inlet is connected with a second air inlet of the constant-temperature vortex dehumidifier through a second air filtering and reducing valve;
the waste liquid collecting port is connected with a water outlet of the water washing device through a second switch ball valve;
the liquid outlet is connected with the water outlet of the constant-temperature vortex dehumidifier through a liquid discharging device;
the standard gas inlet is a gas inlet of the standard gas device;
and the first compressed air inlet, the second compressed air inlet, the waste liquid collecting port, the liquid discharging port, the standard gas inlet and the discharging port are fixedly arranged on the online detection system through plate penetrating connectors respectively.
Preferably, the drain device comprises: the water inlet of the peristaltic pump is connected with the water outlet of the constant-temperature vortex dehumidifier;
the water outlet of the peristaltic pump is connected with the water inlet of the automatic liquid drainage device, and the water outlet of the automatic liquid drainage device is connected with the liquid drainage port.
Preferably, the first filter includes: a condensing-type filter, which is arranged in a filter chamber,
the condensation filter is used for removing residual impurities and liquid drops in the sample gas.
Preferably, the second filter includes: a self-cleaning type filter is arranged in the filter,
the self-cleaning filter is used for removing saturated water vapor contained in the sample gas.
Preferably, the water washing apparatus includes: a visual organic glass washing tank;
the visual organic glass water washing tank is used for washing the sample gas to remove the materials and the acidic sample gas.
Preferably, a gas collecting device connected with an exhaust port of the LEL analyzer is disposed at an interface of the exhaust port, and the gas collecting device includes: a gas collection box, a gas inlet pipe and a gas outlet pipe,
the air inlet pipe is arranged at one side of the air collection box and is connected with an air outlet of the LEL analyzer, a first electromagnetic valve is arranged in the air inlet pipe and is connected with the air inlet pipe through threads, the other side of the gas collection box is provided with the gas outlet pipe, a second electromagnetic valve is arranged in the gas outlet pipe, the second electromagnetic valve is connected with the air outlet pipe through threads, the gas collection box is provided with a controller, the outer side wall of the gas collection box is fixedly provided with a support frame, the support frame is fixedly provided with an alarm, a control switch and a display screen are arranged on one side of the alarm, a pressure sensor is arranged at the bottom end of the gas collection box, the lower end of the pressure sensor is provided with a fixed base, and the controller is respectively connected with the alarm, the control switch, the pressure sensor, the first electromagnetic valve and the second electromagnetic valve.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of an LEL on-line detection system in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a gas collecting device in the novel embodiment of the invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
The embodiment of the utility model provides a production process LEL on-line measuring system, as shown in FIG. 1, include: the system comprises a sampling probe 1, a water washing device 2, an anticorrosive pneumatic air pump 3, a constant-temperature vortex dehumidifier 4, a first filter 5, a second filter 6, an LEL analyzer 7 and a standard gas device 8;
the air inlet of the sampling probe 1 is contacted with the exhaust gas outlet, and the exhaust port of the sampling probe 1 is connected with the air inlet of the water washing device 2 through a first switch ball valve 9;
an exhaust port of the water washing device 2 is connected with a first air inlet of the anticorrosion pneumatic air pump 3;
an exhaust port of the anti-corrosion pneumatic air pump 3 is connected with a first air inlet of the constant-temperature vortex dehumidifier 4;
the exhaust port of the constant-temperature vortex dehumidifier 4 is connected with the air inlet of the first filter 5;
the first exhaust port of the first filter 5 is connected with the inlet port of the second filter 6 through the first inlet port and the exhaust port of the three-way switching valve 10;
the exhaust port of the air marking device 8 is connected with the air inlet of the second filter 6 through the second air inlet and the exhaust port of the three-way switching valve 10;
the exhaust port of the second filter 6 is connected to the intake port of the LEL analyzer 7, and the exhaust port of the LEL analyzer 7 discharges the sample gas through the discharge port via the connection pipe.
The working principle of the technical scheme is as follows: before a system detects and analyzes an exhaust gas sample collected by a sampling probe from a waste discharge port, the standard gas in a standard gas device is required to be transmitted to an LEL analyzer through an exhaust port of the standard gas device, a second air inlet and an exhaust port of a three-way switching valve and a second filter, the range of the LEL analyzer is adjusted according to the analysis result of the LEL analyzer, after the equivalent process is adjusted, the sampling probe in the system starts to collect the exhaust gas sample from the waste discharge port, the exhaust gas sample is discharged into a water washing device through an opened first switch ball valve to remove materials and acid gas in the exhaust gas sample, at the moment, an anticorrosive pneumatic air pump extracts the sample gas with the materials and the acid gas in the exhaust gas sample from the water washing device and transmits the sample gas into a constant-temperature vortex dehumidifier, the constant-temperature vortex dehumidifier removes the moisture in the sample gas, and the sample gas with the moisture removed is cleaned from residual impurities and liquid drops in the sample gas through the first filter, and removing saturated water vapor from the sample gas passing through the first filter through a three-way switching valve and passing through a second filter, and finally transmitting the sample gas to an LEL analyzer, wherein the sample gas is analyzed by the LEL analyzer.
The gas calibration device is arranged to adjust the measuring range of the LEL analyzer, and influence on analysis of sample gas due to measuring range errors is avoided.
The water washing device is arranged to prevent materials and a large amount of corrosive gas from being carried in the sample gas, and a visual organic glass water washing tank is additionally arranged at the pretreatment front stage to wash the sample gas so as to remove the materials and the acidic gas, so that the purpose of protecting the electrode is achieved.
The anti-corrosion pneumatic air pump is particularly suitable for anti-explosion occasions and has no maintenance cost because of simple structure, safety and explosion resistance, reliable performance and long running period.
The constant-temperature vortex dehumidifier comprises a stainless steel vortex refrigeration pipe, a 316L heat exchanger, a gas-liquid separator, a (glass cold cavity double-cavity heat exchanger, gas-liquid separator) heat insulation cover, a thermal expansion thermostatic valve and the like. The constant-temperature vortex dehumidifier has the characteristics of good refrigeration effect, small volume, compressed air as power, no electricity consumption, safe and reliable operation and capability of being used in any inflammable and explosive places.
Wherein, the stainless steel vortex refrigeration pipe takes compressed air as power, and when the compressed air with a certain amount of pressure (0.26-0.35Mpa) is injected into a vortex pipe nozzle, the expansion is accelerated; when the accelerated airflow enters a cylindrical vortex generator, the airflow enters the heat pipe along the wall of the heat pipe at a rotational speed of ten thousand revolutions and generates energy separation after vortex cross-talk, one is cold air flow, and the other is hot air flow which is discharged by hot air through a tail nozzle adjusting valve.
The tail nozzle regulating valve can regulate the outlet temperature and the cold flow rate of cold air (generally, when the inlet pressure is 0.4MPa, the cold flow rate is 30%, and the temperature difference between the cold air outlet and the air inlet can reach 45 ℃).
The thermal expansion thermostatic valve adjusts the air input of the vortex cooling pipe through the temperature so as to keep the temperature of the dehumidifier constant at 1-3 ℃; wherein, the constant temperature of thermostatic valve afterbody has a screw rod, through the adjustable dehumidifier of adjusting screw rod constancy of temperature, and its advantage is, no matter how environmental temperature changes can both reach the constant temperature effect, and the liquid material that partial gas formed after the condensation in the final sample gas passes through eduction gear and discharges automatically.
The beneficial effects of the above technical scheme are: the gas sample processing device is used for washing, dehumidifying, filtering and the like of sample gas, and can effectively prolong the service life of the LEL analyzer.
Preferably, the first filter comprises: a condensing-type filter, which is arranged in a filter chamber,
and the condensation filter is used for removing residual impurities and liquid drops in the sample gas.
Wherein, first filter housing and filter core mounting are made by the stainless steel, and the filter core is made for anticorrosive borosilicate glass fiber, easily change, and anticorrosive fluororubber sealing member makes whole filter have anticorrosive, high-efficient, maintain convenient advantage in addition.
Preferably, the second filter comprises: a self-cleaning type filter is arranged in the filter,
the self-cleaning filter is used for removing saturated water vapor contained in the sample gas.
The second filter removes saturated water vapor contained in the sample gas by utilizing the separation effect of the nano-scale membrane, and ensures the normal use of the LEL analyzer.
Preferably, the water washing device comprises: a visual organic glass washing tank;
the visual organic glass water washing tank is used for washing the sample gas to remove the materials and the acidic sample gas.
The embodiment of the utility model provides an LEL on-line detection system in the production process,
the LEL on-line detection system further comprises: a first adjustable flow meter and a second adjustable flow meter,
the gas inlet of the first adjustable flowmeter is connected with the second gas outlet of the first filter, and the gas outlet of the first adjustable flowmeter discharges the sample gas through the discharge port through the connecting pipeline;
the air inlet of the second adjustable flow meter is connected with the air outlet of the second filter, and the air outlet of the second adjustable flow meter is connected with the air inlet of the LEL analyzer.
The beneficial effects of the above technical scheme are: through setting up first adjustable flowmeter and the adjustable flowmeter of second, be convenient for monitor the sample gas flow volume that gets into the LEL analysis appearance.
The embodiment of the utility model provides an LEL on-line detection system in the production process,
the LEL on-line detection system further comprises: the device comprises a first compressed air inlet, a second compressed air inlet, a waste liquid collecting port, a liquid discharging port, a standard gas inlet and a discharging port;
the first compressed air inlet is connected with a second air inlet of the anticorrosion pneumatic air pump through a first air filtering and reducing valve;
the second compressed air inlet is connected with a second air inlet of the constant-temperature vortex dehumidifier through a second air filtering and reducing valve;
the waste liquid collecting port is connected with a water outlet of the water washing device through a second switch ball valve;
the liquid outlet is connected with the water outlet of the constant-temperature vortex dehumidifier through a liquid discharging device;
the standard gas inlet is a gas inlet of the standard gas device;
and the first compressed air inlet, the second compressed air inlet, the waste liquid collecting port, the liquid discharging port, the label gas inlet and the discharging port are fixedly arranged on the online detection system through plate penetrating connectors respectively.
The waste liquid collecting port can collect water-soluble materials and acid gases discharged by the water washing device when the second switch ball valve is opened, for example;
the drain port may be, for example, condensed water collected.
The exhaust port may be, for example, a gas such as carbon monoxide discharged.
The beneficial effects of the above technical scheme are: set up first compressed air inlet and be for providing power for anticorrosive pneumatic aspiration pump and support, set up second compressed air inlet, be for providing kilometer support for constant temperature vortex dehumidifier, anticorrosive pneumatic aspiration pump and the normal work of constant temperature vortex dehumidifier of being convenient for.
The embodiment of the utility model provides an LEL on-line detection system in the production process,
the liquid discharge device includes: the water inlet of the peristaltic pump is connected with the water outlet of the constant-temperature vortex dehumidifier;
the water outlet of the peristaltic pump is connected with the water inlet of the automatic liquid discharging device, and the water outlet of the automatic liquid discharging device is connected with the liquid discharging port.
The beneficial effects of the above technical scheme are: the liquid of the constant-temperature vortex dehumidifier is convenient to discharge.
The embodiment of the utility model provides an LEL on-line detection system in the production process,
the kneck of discharge port is provided with the gas-collecting device that is connected with the gas vent of LEL analysis appearance, as shown in fig. 2, gas-collecting device includes: a gas collecting box 21, a gas inlet pipe 22 and a gas outlet pipe 23,
an air inlet pipe 22 is arranged on one side of the air collection box 21, the air inlet pipe 22 is connected with an air outlet of the LEL analyzer 7, a first electromagnetic valve 24 is arranged in the air inlet pipe 22, the first electromagnetic valve 24 is connected with the air inlet pipe 22 through threads, an air outlet pipe 23 is arranged on the other side of the air collection box 21, a second electromagnetic valve 25 is arranged in the air outlet pipe 23, the second electromagnetic valve 25 is connected with the air outlet pipe 23 through threads, a controller 26 is arranged on the air collection box 21, a support frame 27 is fixedly arranged on the outer side wall of the air collection box 21, an alarm 28 is fixedly arranged on the support frame 27, a control switch 29 and a display screen 30 are arranged on one side of the alarm 28, a pressure sensor 31 is arranged at the bottom end of the air, the pressure sensor 31, the first solenoid valve 24 and the second solenoid valve 25 are connected.
The working principle of the technical scheme is as follows: the first solenoid valve of controller control is opened, the second solenoid valve is closed, simultaneously, inside this system exhaust final sample gas entered into the gas collection box through the intake pipe, pressure sensor real-time detection gas collection box in the weight value of sample gas, and the weight value that controller control display screen shows pressure sensor and detects, and remind the weight value of user gas collection box current gas in real time, when pressure sensor's weight value is greater than the default, the controller sends alarm signal to the alarm, remind the user to handle its sample gas of collecting.
Wherein the final sample gas is composed of the LEL analyzer and/or the sample gas discharged from the connecting pipe via the first filter.
The types of the controllers include, but are not limited to, STM32, STC51, and the like;
the control switch may be, for example, a push button switch;
the alarm can be an audible and visual alarm, for example;
the display screen may be a touch display screen, for example.
The beneficial effects of the above technical scheme are: the sample gas is convenient to store and use, and resources are saved.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. A production process LEL on-line measuring system which is characterized by comprising: the device comprises a sampling probe, a water washing device, an anticorrosive pneumatic air pump, a constant-temperature vortex dehumidifier, a first filter, a second filter, an LEL analyzer and a standard gas device;
the gas inlet of the sampling probe is in contact with the exhaust gas outlet, and the gas outlet of the sampling probe is connected with the gas inlet of the water washing device through a first switch ball valve;
an exhaust port of the water washing device is connected with a first air inlet of the anticorrosion pneumatic air pump;
an exhaust port of the anticorrosive pneumatic air pump is connected with a first air inlet of the constant-temperature vortex dehumidifier;
the air outlet of the constant-temperature vortex dehumidifier is connected with the air inlet of the first filter;
the first exhaust port of the first filter is connected with the air inlet of the second filter through the first air inlet and the exhaust port of the three-way switching valve;
the exhaust port of the air marking device is connected with the air inlet of the second filter through the second air inlet and the exhaust port of the three-way switching valve;
the gas vent of second filter with the air inlet of LEL analysis appearance is connected, the gas vent of LEL analysis appearance is discharged the sample gas through the discharge port through connecting tube.
2. The on-line production LEL inspection system of claim 1,
the LEL online detection system further comprises: a first adjustable flow meter and a second adjustable flow meter,
the gas inlet of the first adjustable flow meter is connected with the second gas outlet of the first filter, and the gas outlet of the first adjustable flow meter discharges the sample gas through the discharge port through a connecting pipeline;
and the air inlet of the second adjustable flowmeter is connected with the air outlet of the second filter, and the air outlet of the second adjustable flowmeter is connected with the air inlet of the LEL analyzer.
3. The on-line production LEL inspection system of claim 1,
the LEL online detection system further comprises: the device comprises a first compressed air inlet, a second compressed air inlet, a waste liquid collecting port, a liquid discharging port, a standard gas inlet and a discharging port;
the first compressed air inlet is connected with a second air inlet of the anticorrosion pneumatic air pump through a first air filtering and reducing valve;
the second compressed air inlet is connected with a second air inlet of the constant-temperature vortex dehumidifier through a second air filtering and reducing valve;
the waste liquid collecting port is connected with a water outlet of the water washing device through a second switch ball valve;
the liquid outlet is connected with the water outlet of the constant-temperature vortex dehumidifier through a liquid discharging device;
the standard gas inlet is a gas inlet of the standard gas device;
and the first compressed air inlet, the second compressed air inlet, the waste liquid collecting port, the liquid discharging port, the standard gas inlet and the discharging port are fixedly arranged on the online detection system through plate penetrating connectors respectively.
4. The on-line production LEL inspection system of claim 3,
the liquid discharge apparatus includes: the water inlet of the peristaltic pump is connected with the water outlet of the constant-temperature vortex dehumidifier;
the water outlet of the peristaltic pump is connected with the water inlet of the automatic liquid drainage device, and the water outlet of the automatic liquid drainage device is connected with the liquid drainage port.
5. The on-line production LEL inspection system of claim 1,
the first filter includes: a condensing-type filter, which is arranged in a filter chamber,
the condensation filter is used for removing residual impurities and liquid drops in the sample gas.
6. The on-line production LEL inspection system of claim 1,
the second filter includes: a self-cleaning type filter is arranged in the filter,
the self-cleaning filter is used for removing saturated water vapor contained in the sample gas.
7. The on-line production LEL inspection system of claim 1,
the water washing device comprises: a visual organic glass washing tank;
the visual organic glass water washing tank is used for washing the sample gas to remove the materials and the acidic sample gas.
8. The on-line production LEL inspection system of claim 1,
the kneck of discharge port be provided with the gas collection device that the gas vent of LEL analysis appearance is connected, gas collection device includes: a gas collection box, a gas inlet pipe and a gas outlet pipe,
the air inlet pipe is arranged at one side of the air collection box and is connected with an air outlet of the LEL analyzer, a first electromagnetic valve is arranged in the air inlet pipe and is connected with the air inlet pipe through threads, the other side of the gas collection box is provided with the gas outlet pipe, a second electromagnetic valve is arranged in the gas outlet pipe, the second electromagnetic valve is connected with the air outlet pipe through threads, the gas collection box is provided with a controller, the outer side wall of the gas collection box is fixedly provided with a support frame, the support frame is fixedly provided with an alarm, a control switch and a display screen are arranged on one side of the alarm, a pressure sensor is arranged at the bottom end of the gas collection box, the lower end of the pressure sensor is provided with a fixed base, and the controller is respectively connected with the alarm, the control switch, the pressure sensor, the first electromagnetic valve and the second electromagnetic valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920621673.7U CN210166390U (en) | 2019-04-30 | 2019-04-30 | Production process LEL on-line measuring system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920621673.7U CN210166390U (en) | 2019-04-30 | 2019-04-30 | Production process LEL on-line measuring system |
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| CN210166390U true CN210166390U (en) | 2020-03-20 |
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| CN201920621673.7U Active CN210166390U (en) | 2019-04-30 | 2019-04-30 | Production process LEL on-line measuring system |
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